Nathan baumx



Nov. 3, 1925; 1,559,735

N. BAUML sAsH FASTENER Filed Feb. 19. 1925 3mm/viola Patented Nov. 3, 1925,.

UNITED STATES 1,559,735 f f PATENT oFFlc-E. if*

NATHAN BAUML, OF FOXBORO, MIASSACHUKSET'.IS.`

SASH FASTENER.

Application led February To all whom z'z may concern:

Be it known that I, NATHAN BAUML, a citizen of the United States, residing at Foxboro, in the county of Norfolk and State "of Massachusetts, have invented certain new and useful Improvements in a Sash Fastener', of which the following is a specification.

This invention relates to an improved fastener which is especially designed for use in connection with window sashes, although it is capable of use in connection with other forms of closures. f

The invention relates more particularly to a fastener which is in the form of a cam block against which one sash is adapted to Wedge to prevent movement of the same in a predetermined direction, this block being mounted upon the complemental sash and there being novel spring tension coacting means between the mounting means and the block to resiliently maintain the block in operative position.

The features and advantages derived from the particular construction employed for carrying the inventive conception into effect will become apparent from the following description and drawing.

In the accompanying drawing forming a part of this application and in which like numerals are employed to designate like parts throughout the same Figure l is a fragmentary elevational view of a pair of window sashes showing the improved fastener carried by the upper sliding sash.

Figure 2 is a section taken approximately on the plane of the line 2-2 of Figure l.

Figure 3 is a perspective view of one of the details, and

'Figure 4 is an edge elevation on a reduced scale showing the manner in which the locking action is edected.

Referring to the drawings in detail, the reference character l designates generally the upper sliding sash, 2 indicates the lower sliding sash, and 3 the frame in which the sashes are mounted. l

The improvedV fastener comprises primarily a block l which is rounded on one side to provide a cam or wedging surface. The opposite side of the block is substantially fiat, being formed between its ends with a transverse recess 5. Also at the center of the block are bolt holes or the like 6. Seated in the recess 5 is a plate 7, the upper and lower edges of which are directed lat- .block in this position.

device is fastened to one of the rails of the 19, 1925. serial No. 10,258.

erally as at 8 to provide iianges. rI`his plate is bolted or otherwise secured in placeand one edge thereof extends beyond the outer vertical edge as shown in Figure Lthis extended edge being provided with upper and lower elongated slots 9 and withV an intermediate tongue l0. For mounting the device upon the upper sash l on one of the rails thereof I provide an attaching plate l1. fastened in place b screwsfor the likel2. This plate is provic ed with extended arms 13, the free ends of which are rolled or curled as at 14 to provide pivotaly connections with the slotted portions9 `of the eX- tension on the. plate 7. In other words, the end of the arms' 13 are extended through the elongated slots and then bent around to provide pivot knuckles. Between the arms 13 and the attaching plate 11 is a spring tongue l5 for coaction with the first named tongue indicated in Figures l and 2, a snap action will be produced `through the medium of the coacting tongues to resiliently maintain the Assuming that the upper sash, about six inches or'so above the bottom rail of the sash, it is obvious that the block will have its cam surface disposed in the path of movement of the top rail of the lower sash as shown in Figure 2. Hence, outward movement of the lower sash is prevented. Ihe further the lower sash is lifted, the greater the wedge action.

With the device thus disposed, the upward movement of the lower sash is limited and it is obvious that the same may be left open with safety. In this connection it is to be ypointed out that the fastener will be disposed at a point to stop the movement of the lower sash so that the opening produced thereby will be such as to prevent the entrance of an intruder therethrough. With the device in its normal position shown in Figure l, it does not interfere with the usual moveinentof the sashes, proper clearance being provided.

It is thought that the iforegoin` description taken in connection with the acconi.- panying drawing Will enable persons skilled in the art to which the invention relates to obtain a clear understanding; of the saine. Therefore, a more lengthy description? is thought unnecessary.

Although the preferred embodiment of the invention has been shown and described'7 it is'to be understoodthat niinor changes comingivithin the field of invention claimed may be resorted to if desired.

Having thue described theV invention, what I claim is l. A sash fastener of the class described coinprisineja bleclr, ene surface of which is rounded to provide a Wedging c ain fo a lower sliding sash, an attaching plate 'adapt-- edto befastened to an upper coacting` sash, and resilient snap retaining means' between the plate and the block;

2. A-Ksash fastener of th'ei'class described comprising` a retaining ir-ieinber, alplate attached thereto, an attaching plate, a pivotal connection between saidplates, and coacting spring tongues carried by the plate and cooperable to produce a snap faetener.

3. A sash fastener comprising a retaining bloe'k'hafvingion'e*surface rounded to provide a friction Cain, a plate attached to the opposite side ot' said blo'elz'g-said plate having an extended portion orined with elongated slotsfand Withan "intervening tongue, an at! taehingplate adapted'to be *mounted upon a relatively" stationary part,` sai d attaeh'i plate embodying a'ilnsgtheffree ends oit which are extended through said' slots to providel` a pivotal Vconnection between said platesythe attaching' plates being"fornied'between said l' arms with an intervening resilient l tongue cooperable with the--ii1stf' nain'ed toil-guet- In testimony whereof I aliiXv niy-slgnatuie. 

